Characterization of a β-1,3-glucanase active in the alkaline midgut of Spodoptera frugiperda larvae and its relation to β-glucan-binding proteins

►S. frugiperda β-1,3-glucanase (SLam) is a non lytic and non processive endoglucanase SLam derives from the same ancestor gene as β-glucan-binding proteins. β-glucanases lost an extended N-terminal region from the ancestor protein. β-glucan-binding proteins lost the catalytical residues from the ancestor protein.